include [HTML_REMOVED]
using namespace std;
int main()
{
float x;
cin>>x;
if(x>0&&x<=2000.0){
printf(“Isento”);
}else if(x>2000.0&&x<=3000.0){
printf(“R$ %.2f”,(x-2000.00)*0.08);
}else if(x>3000.0&&x<=4500.00){
printf(“R$ %.2f”,80.00+(x-3000.00)0.18);
}else if(x>4500.00){
printf(“R$ %.2f”,350.00+(x-4500.00)0.28);
}
return 0;
}